- 1. UPSEEPAST PAPERCHEMISTRY- UNSOLVED PAPER - 2006
2. SECTION I Single Correct Answer Type There are five parts in
this question. Four choices are given for each part and one of them
iscorrect. Indicate you choice of the correct answer for each part
in your answer-book bywriting the letter (a), (b), (c) or (d)
whichever is appropriate 3. 01 Problem Bakelite is obtained from
phenol by reacting with : a. Acetaldehyde b. Acetal c. Formaldehyde
d. Chlorobenzene 4. 02 Problem The molecule which does not exhibit
dipole moment is : a. NH3 b. CHCl3 c. H2O d. CCl4 5. 03 Problem
What is the half-life of 6C14, if its disintegration constant is
2.31 x 10-4 year-1 ? a. 0.3 x 104 year b. 0.3 x 103 year c. 0.3 x
108 year d. 0.3 x 102 year 6. 04 Problem One mole of CO2 contains :
a. 3 g atoms of CO2 b. 18.1 x 1023 molecules of CO2 c. 6.02 x 1023
atoms of O d. 6.02 x 1023 atoms of C 7. 05 Problem Which of the
following is isoelectronic with CO2 ? a. NO2 b. NO c. N2O d. N2O4
8. 06 Problem All bond angles are exactly equal to 1090 28 in : a.
Methyl chloride b. Iodoform c. Chlorofom d. Carbon tetrachloride 9.
07 Problem The heats of combustion of carbon monoxide at constant
pressure and at constant volume at 270C will differ from one
another by : a. 27 cal b. 54 cal c. 300 cal d. 600 cal 10. 08
Problem For the reaction the change of enthalpy at 270C is 19 kcal.
The value of E is : a. 21.2 kcal b. 17.8 kcal c. 18.4 kcal d. 20.6
kcal 11. 09 Problem In acidic medium MnO is converted to Mn2+, The
quantity of electricity in faraday required to reduce 0.5 mole of
MnO to Mn2+ would be : a. 2.5 b. 5 c. 1 d. 0.5 12. 10 Problem
During electrolysis of water the volume of O2 liberated is 2.24
dm3. The volume of hydrogen liberated, under same conditions will
be : a. 2.24 dm3 b. 1.2 dm3 c. 4.48 dm3 d. 0.56 dm3 13. 11 Problem
Calculate the total pressure in a 10.0L cylinder which contains 0.4
g helium, 1.6 g oxygen and 1.4 g nitrogen at 270C a. 0.492 atm b.
49.2 atm c. 4.92 atm d. 0.0492 atm 14. 12 Problem If the energy
difference between the ground state of an atom and its exited state
is 4.4 x 10-4 J, the wavelength of photon required to produce the
transition : a. 2.26 x 10-12 m b. 1.13 x 10-12 m c. 4.52 x 10-16 m
d. 4.52 x 10-12 m 15. 13 Problem The activity of a radioactive
substance falls to 87.5% of the initial value is 5 years. What is
the half-life of the element ? a. 52 years b. 104 years c. 26 years
d. 13 years 16. 14 Problem Metals are good conductors of
electricity because they contain : a. Ionic bonds b. A network
structure c. Very few valence electrons d. Free electrons 17. 15
Problem The oxidation states of iodine in HIO4,H3IO5 and H5IO6 are
respectively : a. + 1, + 3, + 7 b. + 7, + 7, + 3 c. + 7, + 7, + 7
d. + 7, + 5, + 3 18. 16 Problem Crystalline form of silica is
called : a. Crystalline silicon b. quartz c. rock d. talc 19. 17
Problem The elements commonly used for making transistors are : a.
C and Si b. Ga and In c. P and As d. Si and Ge 20. 18 Problem Ethyl
alcohol is used as a preservative for chloroform because it : a.
Prevents aerial oxidation of chloroform b. Prevents decomposition
of chloroform c. Decomposes phosgene to CO and Cl2 d. Removes
phosgene by converting it to ethyl carbonate 21. 19 Problem In the
following sequence of reactions C2H5Br is : AgCN X Re ductionY ;Y
a. n-propyl amine b. isopropylamine c. ethylamine d. ethylmethyl
amine 22. 20 Problem Alcoholic beverages contain : a. Isopropyl b.
Alcohol c. n-propyl alcohol d. methyl alcohol 23. 21 Problem
K2Cr2O7 In the reaction AH2 SO4 acetone oxidation acetic acid, A is
: a. 1-propanol b. 2-butanol c. 2-propanol d. ethanol 24. 22
Problem The enzymes which are used to convert starch into ethyl
alcohol are : a. Maltase, diastase b. Diastase, maltase, zymase c.
Ivertase, zymase d. Invertase, diastase, maltase 25. 23 Problem
Picric acid is : a. 2, 4, 6-tribromophenol b. sym-trinitrophenol c.
trinitrophenol d. 2, 4, 6-trinitrotoluene 26. 24 Problem
2-pentanone and 3-pentanone can be distinguished by : a. Cannizaros
reaction b. Aldol condensation c. Iodoform reaction d. Clemmensens
reduction 27. 25 Problem The acid which contains the aldehyde group
is : a. Acetic acid b. Formic acid c. Benzoic acid d. Proprionic
acid 28. 26 Problem Sour taste of lemon is due to the presence of :
a. Citric acid b. Acetic acid c. Oxalic acid d. None of these 29.
27 Problem Vinegar is a solution of acetic acid which is : a.
15-20% b. 20- 25% c. 6-8% d. 2-4% 30. 28 Problem Calcium formate on
distillation gives : a. HCOOH b. CH3COOH c. CH3CHO d. HCHO 31. 29
Problem oxidation NH3 In the reaction : CH3OH A B ; A and B are :
a. HCHO, HCOONH4 b. HCCOH, HCOONH4 c. HCOOH, HCONH2 d. HCHO,HCONH2
32. 30 Problem The cleavage of an aryl-alkyl ether with cold HI
gives : a. Alkyl iodide and water b. Aryl iodide and water c. Alkyl
iodide, aryl iodide and water d. Phenol and alkyl iodide 33. 31
Problem The number of and bonds in a molecule of acetonitrile are
respectively : a. 2, 5 b. 3, 4 c. 4, 3 d. 5, 2 34. 32 Problem
Proteins are : a. Polypeptides with low molecular weights b.
Polypeptides with high molecular weights c. Polymers of amides d.
Polymers of secondary amines 35. 33 Problem Glucose is a/an : a.
Polyhydroxy ketone b. Alcohol c. Hydrate of carbon d. Pentarhydroxy
aldehyde 36. 34 Problem Which one of the following, is on ester ?
a. Coconout oil b. Kerosene oil c. Soap d. Teflon 37. 35 Problem
Among the following a natural polymer is a. Cellulose b. PVC c.
Polyethylene d. Teflon 38. 36 Problem The mass of 1 mole of
electrons is a. 9.1 X 10-28 g b. 1.008 mg c. 0.55 mg d. 9.1 X
10-27g 39. 37 Problem The bond order of N2+ is a. 1.5 b. 3.0 c. 2.5
d. 2.0 40. 38 Problem An aqueous solution of glucose is 20% in
strength. The volume in which 1 g mole of it is dissolved will be
a. 9L b. 1.8L c. 8L d. 0.9L 41. 39 Problem Green vitriol is a.
FeSO4. 7H2O b. ZnSO4. 7H2O c. CuSO4. 5H2O1 d. CaSO4. 2 H2O 42. 40
Problem Amphoteric-oxide combinations are in : a. ZnO, K2O, SO3- b.
ZnO, P2O5, Cl2O7 c. SnO2, Al2O3, ZnO d. PbO2, SnO2, SO3 43. 41
Problem The element having highest electron affinity is : a.
Bromine b. Iodine c. Fluorine d. Chlorine 44. 42 Problem The
correct order according to size is : a. O > O- > O2- b. O-
> O2- > O c. O2- > O- > O d. O > O2- > O- 45. 43
Problem Diagonal relationship is for a. Li Na b. Be Mg c. Si C d. B
Si 46. 44 Problem Mixture of MgCl2 and MgO is called : a. Portland
cement b. Sorrels cement c. Double salt d. None of these 47. 45
Problem Baking powder contains : a. NaHCO3, Ca(H2PO2)2 and starch
b. NaHCO3, Ca(H2PO2)2 c. NaHCO3, starch d. NaHCO3, 48. 46 Problem
Estimation of calcium and magnesium is done by : a. EDTA b. Oxalate
c. Phosphate d. None of these 49. 47 Problem Buckminster fullerene
is : a. Pure graphite b. C-60 c. Diamond d. C- 90 50. 48 Problem Pb
reacts with dilute HNO3 produces : a. NO b. NH4NO3 c. N2O5 d. NO2
51. 49 Problem End-product of the hydrolysis of XeF6 is : a. XeF4O
b. XeF2O2 c. XeO3 d. XeO 3 52. 50 Problem Dry ice is : a. Solid SO2
b. Solid NH3 c. Solid O2 d. Solid CO2 53. 51 Problem For
advertisement, the coloured discharged tubes contain : a. He b. Ne
c. Ar d. Kr 54. 52 Problem The deficiency of iodine in diet causes
: a. Rickets b. Nightblindness c. Beri-beri d. Goiter 55. 53
Problem Bronze is a mixture of : a. Pb + Sn b. Cu + Sn c. Cu + Zn
d. Pb + Zn 56. 54 Problem The process of zinc-plating on iron sheet
is known as : a. Annealing b. roasting c. galvanization d. smelting
57. 55 Problem Vitamin B12 contains : a. Co b. Mn c. Mg d. Fe 58.
56 Problem Philosophers wool on heating with BaO at 11000C produce
: a. Ba + ZnCl2 b. BaCdO2 c. BaZnO2 d. BaO2 + Zn 59. 57 Problem
Following method is not used for extraction of Al : a. van Arkel b.
Serpeck c. Baeyer d. Hall-Heroult 60. 58 Problem In electrorefining
of copper, some gold is deposited as : a. Cathode b. Electrode c.
Cathode mud d. Anode mud 61. 59 Problem The pH value of 1/1000
N-KOH solution is : a. 3 b. 10-11 c. 2 d. 11 62. 60 Problem
Geometrical isomers can exist for : a. CH3CH(CH3)CH2CH2CH3 b. CH3CH
= CH . CH3 c. CH3CH = CH2 d. ClH2C CH2Cl 63. 61 Problem Size of
colloidal particles is in the range : a. 0.05 m - 0.1 m b. 25 - 30
c. 0.1 - 1 m d. 10 -20 64. 62 Problem Osmotic pressure of 0.4% urea
solution is 1.64 atm. And that of 3.42% can sugar is 2.46 atm. When
the above two solutions are mixed, the osmotic pressure of the
resulting solution is : a. 0.82 atm b. 2.46 atm c. 1.64 atm d. 4.10
atm 65. 63 Problem LPG mainly contains : a. Ethyne b. Butane c.
Methane d. Ethane 66. 64 Problem Which of the following metal ions
is not coloured ? a. Ti3+ b. Fe3+ c. V2+ d. Zn2+ 67. 65 Problem
Volume of water needed to mix with 10 mL NHCl to get 0.1 N HCl is :
a. 900 mL b. 9 mL c. 90 mL d. 100 mL 68. 66 Problem Heavy water is
: a. Water containing Fe, Cr, Mn b. Water at 00C c. D2O d. Water
obtained after distillation 69. 67 Problem Two moles of PCl5 were
heated in a closed vessel of 2 L. AT equilibrium 40% of PCl5 is
dissociated into PCl5 and Cl2. The value of equilibrium constant is
: a. 0.53 b. 0.267 c. 2.63 d. 5.3 70. 68 Problem Equal moles of
water and urea are taken in a flask. What is mass percentage of
urea in the solution ? a. 23.077% b. 230.77% c. 2.3077% d. 0.23077%
71. 69 Problem The radiant energy from the sun is due to : a.
Combustion b. Nuclear fusion c. Nuclear fission d. Chemical
reaction 72. 70 Problem The IUPAC name of K2 [PtCl6] is : a.
Hexachloroplatinate potassium b. Potassium hexachloroplatinate (IV)
c. Potassium hexachloroplatinate d. Potassium hexachloroplatinum
(IV) 73. 71 Problem The solubility of CaF2 in pure water is 2.3 x
10-6 mol dm-3. Its solubility product will be : a. 4.8 x 10-18 b.
48.66 x 10-18 c. 4.9 x 10-11 d. 48.66 x 10-15 74. 72 ProblemHNO2 In
the reaction RNH2A B C ; C is : a. NH3 b. N2 c. O2 d. CO2 75. 73
Problem In an isochoric process, H for a system is equal to : a. P
. V b. PV c. E + P . V d. E 76. 74 Problem The value of the ionic
product of water depends : a. On volume of water b. On temperature
c. Changes by adding acid or alkali d. Always remain constant 77.
75 Problem Fluorine exhibits an oxidation state of only-1because :
a. It can readily accept an electron b. It is very strongly
electronegative c. It is a non-metal d. It belongs to halogen
family 78. FOR SOLUTIONS VISIT WWW.VASISTA.NET
